•  What is “umask†in Unix?
•  What are the “setuidâ€, “setgid†and “sticky†bitflags?
•  What are access tokens and security descriptors inthe context of Windows access control?
•  What are principles of the Bell-LaPadulaconfidentiality model?
•  What are principles of the Biba integritymodel?
•  What are principles of the Clark-Wilson integritymodel?